A black hole in a dark matter cloud rings differently than an empty one. Its gravitational voice changes — and LIGO detectors can pick it up. Perhaps this is how we'll first snag the elusive particles of dark matter.
🎯 Gravitational atoms can theoretically generate gravitational wave energy — just as ordinary atoms emit light when electrons transition.
🎬 In science fiction, clouds around black holes often serve as a source of mysterious signals or even consciousness. For example, in Peter Watts' novel Blindsight, an alien intelligence dwells precisely in such a radio cloud.